摘要
目的通过对2014—2016年空气污染物分布规律的分析,深入了解吉林省空气污染特点,进而为有针对性地开展环境空气保护与治理工作提供科学依据。方法收集A市、B市2014—2016年连续三年每日的空气主要污染物(PM_(2.5)、PM_(10)、SO_2、NO_2)环保监测数据,通过描述及对比A、B两市各种空气污染物在时间、空间上的分布规律,探讨空气污染特点。结果各空气污染物年均浓度A市均高于B市;A市各种空气污染物均逐年下降,B市除PM_(2.5)变化不显著外,其他三种污染物也有所降低;各空气污染物呈现出明显的时间变化规律:冬春季节相对较高,夏秋相对较低;除SO_2外,其他三种污染物A市超标率均高于B市;各污染物超标率逐年下降;冬季颗粒物超标情况较重。结论吉林省A、B两市空气污染状况呈现逐年下降趋势,但冬季污染仍较重,超标率较高;空气污染物随时间呈现出规律性分布,即冬季最高,冬春季节持续较高,夏秋季节较低的特点;A市空气污染重于B市,空气污染可能受多种因素的影响进而表现出一定的区域性。
Objective In order to understand the regularity of air pollution in Jilin province,the distribution of air pollutants in 2014-2016 was analyzed to provide scientific basis for environmental protection and management. Methods The monitoring data on daily main air pollutants（ PM（2.5）,PM（10）,SO2,NO2） in the environment were collected for three consecutive years（ 2014-2016） in city A and city B of Jilin province. The distribution of air pollutants with time and space were described and compared to discuss the regularity of air pollution. Results The annual average concentration of air pollutants in city A was higher than that in city B. All kinds of air pollutants in city A were decreasing year by year,and the pollutants in city B were obviously decresing except for PM（2.5）.The variation of air pollutants was obvious with time： relatively higher in spring and winter and relatively lower in summer and autumn. Except for SO2,the rate of exceeding the standard limit for other three pollutants of city A are higher than that of city B. The rates of unqualified pollutants were decreasing year by year,but the excessive particulate matter in winter was serious. Conclusions The situation of air pollution in city A and city B of Jilin province was improving year by year,but the pollution was still heavy in winter,and the rate of unqualification was high. There was a regular distribution of air pollutants over time,the highest in winter,higher in winter and spring,and lower in summer and autumn. Air pollution in city A was heavier than that in city B. Air pollution might be influenced by many factors,and showed regional characteristics.
出处
《环境卫生学杂志》
2017年第5期380-385,共6页
JOURNAL OF ENVIRONMENTAL HYGIENE
基金
中央补助地方空气污染对人群健康影响监测项目
吉林省卫生和计划生育委员会2015年科研课题(2015Z103)
关键词
吉林省
空气污染物
分布特征
Jilin province, air pollutant, distribution characteristics
